Flow self-adaptive overflowing device
By designing a flow adaptive overcurrent device including an overcurrent base, transition assembly and valve core, the valve state is automatically adjusted by the cooperation of the spring, the problem of malfunctioning of the existing safety valve under different conditions is solved, and the different Normal work and universality under conditions.
Patent Information
- Application Number
- CN202411551708.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-01
- Publication Date
- 2025-01-03
AI Technical Summary
The flow setting of existing safety valves is fixed, which may cause malfunctioning under different industries and regions, resulting in service interruption, traditional solutions are costly and damage airtightness, affecting production efficiency.
Design a flow adaptive overflow device, including an overflow base, a transition assembly and two valve cores. Through the mutual cooperation of the overflow spring, the adjustment spring and the transition spring, the valve state is automatically adjusted according to the airflow pressure to ensure that it is within the normal flow range. It works normally and blocks gas inflow when it exceeds the range.
The normal operation of the safety valve under different conditions is achieved, service interruption and pipeline repair caused by accidental closure is avoided, the versatility of the overflow device is improved, and the need to replace the safety valve is reduced.
Smart Images
Figure CN119244787A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of safety valve accessories, and in particular relates to a flow adaptive flow device. Background Art
[0002] In the field of gas safety such as fuel gas and toxic gas, safety valves (such as timing valves, solenoid valves, electric valves, etc.) play a vital role when using over-current devices as accessories. When the flow increases to the maximum value of the over-current design, or the outlet pipe falls off and causes under-pressure, the over-current device will automatically close the valve to ensure that there is no safety hazard caused by over-current or under-pressure.
[0003] However, working conditions vary significantly across industries and regions, meaning that the required safety valve flow thresholds will also vary. Safety valves are usually designed with a fixed flow setting (i.e., their thresholds are fixed), which can lead to false trips in some cases—even when the flow is within a safe and normal range, the valve may incorrectly close, interrupting service and affecting production efficiency or daily life. The traditional solution is to replace the safety valve or its internal flow device, but this is not only costly, but may also damage the original air tightness of the pipeline system, requiring additional maintenance and inspection. Summary of the invention
[0004] The present invention aims to provide a flow adaptive overflow device to improve the versatility of the overflow device.
[0005] A flow adaptive flow device in the present scheme includes a flow base, a transition component and two valve cores, wherein the flow base is fixedly connected with a filter seat, a flow valve core seat and an adjusting valve core seat in sequence, the flow valve core seat and the adjusting valve core seat are both provided with flow holes for gas to pass through, and flow sealing rings are both provided in the flow holes, and the two valve cores each include a fixed rod and a sealing plate for sealing the flow sealing ring, the fixed rod is fixedly connected at the center of the sealing plate, and an adjusting spring and a flow spring are respectively sleeved on the two fixed rods, and the two fixed rods pass through the two flow sealing rings respectively, one end of the flow spring and the adjusting spring are respectively abutted on the two sealing plates, and the other ends of the flow spring and the adjusting spring are respectively abutted on the flow valve core seat and the adjusting valve core seat, the other end of the sealing plate abutting against the flow spring abuts against the filter seat, and the other end of the sealing plate abutting against the adjusting spring abuts against the flow valve core seat; the transition component includes a transition The closure of the valve core is connected to the closure of the valve body by a spring, and the closure of the valve body is connected to the closure of the valve body by a spring.
[0006] The working principle and beneficial effects of this solution are as follows: the elastic force of the overcurrent spring>the elastic force of the transition spring≥the elastic force of the regulating spring. The elastic force of the overcurrent spring is within the maximum overcurrent value allowed by the standard. Exceeding this value can be understood as an abnormal value, which may lead to safety hazards. Therefore, the elastic force of the overcurrent spring can be designed according to the maximum value allowed by the area. The overcurrent device is an accessory of the safety valve and is installed at the inlet end of the corresponding safety valve (timing valve, solenoid valve, electric valve, etc.). In the initial state, the transition baffle blocks the air hole on the transition sealing ring, so that after the gas flows into the filter seat, it can only pass through the overcurrent sealing ring in the overcurrent valve core seat and the regulating valve core seat, and then through the through hole on the transition baffle, and finally enter the safety valve from the air outlet hole on the transition base. When the flow rate increases, when the pressure generated by the airflow gradually increases to the elastic force of the regulating spring, the fixed rod in the regulating valve core seat and the sealing plate connected thereto move toward the side of the transition base until they are tightly fitted with the sealing plate and the flow sealing ring in the regulating valve core seat, cutting off the airflow from there into the safety valve. If the flow rate does not increase at this time, the flow device is in the valve closing state. Because the elastic force of the transition spring is close to the elastic force of the regulating spring, if the flow rate continues to increase at this time (normal flow rate increase), the airflow enters through the air inlet hole, and then acts on the transition baffle through the air hole on the transition sealing ring. The pressure generated by the airflow can open the transition baffle, causing the transition baffle to move toward the side of the safety valve, and then the airflow enters the safety valve from the through hole of the transition baffle, and the safety valve is in normal working condition. If the flow rate continues to increase, even greater than the elastic force of the overcurrent spring (based on the above, the elastic force of the overcurrent spring is at the maximum overcurrent value allowed by the standard. When it is greater than the elastic force of the overcurrent spring, it can be determined as an overcurrent caused by a fault), the fixed rod and the sealing plate connected to the overcurrent spring are pressed toward the overcurrent sealing ring side until they fit tightly. The overcurrent device completely blocks the gas from entering the valve body, thereby achieving overcurrent protection.
[0007] This solution uses the mutual cooperation between the overflow spring, the adjustment spring and the transition spring, combined with the joint action of other components, so that the air flow pressure is within the normal fluctuation range, the safety valve can work normally, and avoid affecting the normal use of users due to accidental closure. At the same time, it also avoids a large number of pipeline maintenance and safety valve replacement problems caused by accidental closure of the safety valve. In addition, because the overflow device realizes flow self-adaptation, the overflow device can be applied to pipe network installation in a larger range and region, greatly improving its versatility.
[0008] Furthermore, an annular boss is integrally formed in the flow base, and the flow valve core seat and the regulating valve core seat are respectively fixed on both sides of the boss. The arrangement of the boss makes the installation of the flow valve core seat and the regulating valve core seat more convenient.
[0009] Furthermore, the connection between the regulating valve core seat and the flow valve core seat and the boss is provided with a first sealing ring and a second sealing ring respectively. The first sealing ring and the second sealing ring are provided to improve the airtightness of the connection between the flow valve core seat and the regulating valve core seat and the boss.
[0010] Furthermore, a constriction is provided at the outer edge of the end of the flow valve core seat away from the filter seat, and the second sealing ring is sleeved at the constriction. The setting of the constriction facilitates the rapid connection and separation of the second sealing ring and the flow valve core seat, and in combination with the boss, it helps to better achieve the sealing performance of the connection between the flow valve core seat and the boss.
[0011] Furthermore, the ends of the flow valve core seat and the regulating valve core seat away from the filter seat are both provided with guide tubes, and the two fixing rods are respectively slidably connected in the two guide tubes. The provision of the guide tubes helps to improve the stability of the fixing rods during movement.
[0012] Furthermore, the two guide tubes extend into the two flow sealing rings respectively, and the ends of the flow spring and the regulating spring away from the sealing plate are respectively sleeved on the corresponding guide tubes. The flow spring and the regulating spring are sleeved on the guide tubes, which helps to improve the stability of the flow spring and the regulating spring when they are compressed / recovered.
[0013] Furthermore, the two sealing plates are at equal distances from the corresponding guide tubes. In the initial state, the end of the fixed rod located in the flow valve core seat away from the filter seat abuts against the sealing plate between the flow valve core seat and the regulating valve core seat. The two sealing plates are at equal distances from the corresponding guide tubes. When the air flow pressure reaches the elastic force of the flow spring, the flow spring is compressed, and the two sealing plates respectively block the two flow sealing rings, resulting in a better sealing effect.
[0014] Furthermore, the transition seal ring is provided with an annular groove on one side facing the transition baffle, the air hole is provided at the groove, and the transition baffle is provided with an annular flange used in conjunction with the groove. The flange and the groove are used in conjunction to help improve the airtightness of the contact between the transition seal ring and the transition baffle.
[0015] Furthermore, the transition baffle includes a sleeve and an annular retaining ring, the retaining ring is slidably connected in the transition base, the outer wall of the sleeve is evenly distributed with connecting rods, one end of the connecting rod away from the sleeve is fixedly connected to the inner wall of the retaining ring, and the gap between the connecting rod, the sleeve and the inner wall of the retaining ring constitutes the through hole; the sleeve is slidably sleeved on the guide tube of the regulating valve core seat. The retaining ring is slidably connected in the transition base, and the sleeve is slidably sleeved on the guide tube of the regulating valve core seat, so that the retaining ring is subject to dual restrictions of the guide tube and the transition base, thereby improving the sliding stability of the transition baffle.
[0016] Furthermore, the regulating valve core seat includes an annular regulating fixed seat and an regulating cylinder fixedly connected in the regulating fixed seat, the regulating cylinder and the regulating fixed seat are coaxial, the flow hole is arranged at the center of the regulating cylinder and penetrates through it, the air inlet holes are evenly distributed between the regulating cylinder and the regulating fixed seat, the flow sealing ring is fixedly connected in the regulating cylinder, the aperture of the flow hole is larger than the outer diameter of the sleeve, and the sleeve and the regulating cylinder are coaxial; one end of the guide tube is fixedly connected in the regulating cylinder, the transition sealing ring is sleeved on the regulating cylinder, and the flange is arranged on the side of the retaining ring facing the transition sealing ring. In the initial state, the air inlet hole is connected with the air hole, the air hole is blocked by the retaining ring, and the air flow enters the through hole through the flow hole in the regulating cylinder, and then enters the safety valve from the air outlet hole of the transition base. When the pressure reaches the elastic force of the adjusting spring and is less than the elastic force of the overflow spring, the sealing plate seals the overflow sealing ring in the adjusting cylinder, and the airflow enters the exhaust hole from the air inlet. When the airflow pressure reaches the elastic force of the transition spring, the airflow pushes the retaining ring and the sleeve to move to the side away from the filter seat, so that the airflow flows from the through hole to the exhaust hole and then enters the safety valve. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 A three-dimensional diagram of a flow adaptive flow device according to an embodiment of the present invention;
[0018] Figure 2 for Figure 1 Exploded view of the medium flow adaptive flow device;
[0019] Figure 3 for Figure 1 A longitudinal cross-sectional view of
[0020] Figure 4 for Figure 2 A three-dimensional view of the center regulating valve core seat. DETAILED DESCRIPTION
[0021] The following is further described in detail through specific implementation methods:
[0022] The figure marks in the drawings of the specification include: transition base 1, transition spring 2, transition baffle 3, sleeve 31, retaining ring 32, flange 33, transition sealing ring 4, air hole 41, regulating valve core seat 5, regulating fixed seat 51, regulating cylinder 52, air inlet hole 53, first sealing ring 6, flow sealing ring 7, fixing rod 8, regulating spring 9, second sealing ring 10, flow spring 11, flow base 12, filter seat 13, flow hole A, guide tube B.
[0023] The embodiment is basically as shown in the attached Figures 1 to 4As shown: a flow adaptive flow device, including a flow base 12, a transition assembly and two valve cores, the flow base 12 is fixedly connected with a filter seat 13, a flow valve core seat and a regulating valve core seat 5 in sequence, specifically: an annular boss is integrally formed in the flow base 12, the flow valve core seat and the regulating valve core seat 5 are respectively fixed on both sides of the boss, a first sealing ring 6 and a second sealing ring 10 are respectively provided at the connection between the regulating valve core seat 5 and the flow valve core seat and the boss, a constriction is provided at the outer edge of the flow valve core seat away from the filter seat 13, and the second sealing ring 10 is sleeved on the constriction.
[0024] Both the flow valve core seat and the regulating valve core seat 5 are provided with a flow hole A for gas to pass through, and a flow sealing ring 7 is pressed into the flow hole A. More specifically, a fixing ring is provided on the side wall of the flow hole A, and the flow sealing ring 7 is provided with an annular protrusion used in conjunction with the fixing ring, so that the fixing ring supports the flow sealing ring 7. The flow valve core seat and the regulating valve core seat 5 are both provided with a guide tube B at one end away from the filter seat 13. Specifically: a rod is fixedly connected to the outer wall of the guide tube B in a radial manner, and the other end of the rod is fixedly connected to the side wall of the flow hole A. One end of the guide tube B extends into the flow sealing ring 7. The outer diameter of the guide tube B is smaller than the aperture of the flow sealing ring 7, and the guide tube B is coaxial with the flow hole A. More specifically: the regulating valve core seat 5 includes an annular regulating fixed seat 51 and an regulating cylinder 52 fixedly connected to the regulating fixed seat 51 through a rod, the regulating cylinder 52 and the regulating fixed seat 51 are coaxial, the flow hole A is arranged at the center of the regulating cylinder 52 and penetrates it, air inlet holes 53 are evenly distributed between the regulating cylinder 52 and the regulating fixed seat 51, and the flow sealing ring 7 is fixedly connected in the regulating cylinder 52.
[0025] The two valve cores each include a fixed rod 8 and a sealing plate for sealing the overflow sealing ring 7. The fixed rod 8 is fixedly connected at the center of the sealing plate. An adjusting spring 9 and an overflow spring 11 are respectively sleeved on the two fixed rods 8. The two fixed rods 8 pass through the two overflow sealing rings 7 respectively and are slidably connected in the corresponding guide tubes B. One end of the overflow spring 11 and the adjusting spring 9 are respectively abutted on the two sealing plates. One end of the overflow spring 11 and the adjusting spring 9 away from the sealing plate are respectively sleeved on the corresponding guide tubes B. The other end of the sealing plate abutted against the overflow spring 11 abuts against the filter seat 13. The other end of the sealing plate abutted against the adjusting spring 9 abuts against the guide tube B (the guide tube B is connected to the overflow valve core seat); the two sealing plates are at an equal distance from the corresponding guide tubes B. In the initial state, one end of the fixed rod 8 located in the overflow valve core seat away from the filter seat 13 abuts against the sealing plate not connected thereto.
[0026] The transition assembly includes a transition sealing ring 4 and a transition base 1 with an open end, the open end of the transition base 1 is fixedly connected to the end of the flow base 12 away from the filter seat 13, and the open end of the transition base 1 is abutted against the end of the adjustment fixing seat 51 away from the filter seat 13; the end of the transition base 1 away from the opening is evenly distributed with air outlet holes connected to the opening, the inner bottom of the transition base 1 is provided with a limiting tube extending toward the open end, and the guide tube B close to it is slidably connected in the limiting tube, and a transition baffle 3 is slidably connected in the transition base 1, specifically: the transition baffle 3 includes a sleeve 31 and an annular retaining ring 32, the retaining ring 32 is slidably connected in the transition base 1, and connecting rods are evenly distributed on the outer wall of the sleeve 31, and the end of the connecting rod away from the sleeve 31 is fixedly connected to the inner wall of the retaining ring 32, and the gap between the connecting rod, the sleeve 31 and the inner wall of the retaining ring 32 constitutes The through hole is connected with the flow hole A; the sleeve 31 is slidably sleeved on the guide tube B of the regulating valve core seat 5; the sleeve 31 is sleeved with a transition spring 2, one end of the transition spring 2 is sleeved on the limit tube and abuts against the inner bottom of the transition base 1, and the other end of the transition spring 2 abuts against the retaining ring 32; the transition sealing ring 4 is sleeved on the regulating tube 52, and the transition sealing ring 4 is evenly distributed with air holes 41, and the side of the transition sealing ring 4 facing the retaining ring 32 is provided with an annular groove, and the air hole 41 is arranged at the groove, and the air hole 41 is connected with the air inlet hole 53, and the side of the retaining ring 32 facing the transition sealing ring 4 is protruded with an annular flange 33 used in conjunction with the groove; the aperture of the flow hole A is larger than the outer diameter of the sleeve 31, and the sleeve 31 is coaxial with the regulating tube 52; the elastic force of the flow spring 11>the elastic force of the transition spring 2≥the elastic force of the regulating spring 9.
[0027] The specific implementation process is as follows: when in use, the flow device is used as an accessory of the safety valve, and one end of the flow base 12 provided with the transition base 1 is installed on the inlet end of the corresponding safety valve (timing valve, solenoid valve, electric valve, etc.). In the initial state, the flange 33 on the retaining ring 32 blocks the air hole 41 on the transition sealing ring 4, so that after the gas flows into the filter seat 13, it can only pass through the flow sealing ring 7 in the flow valve core seat and the regulating valve core seat 5, and then through the through hole, and finally enter the safety valve from the air outlet on the transition base 1. When the flow increases, when the pressure generated by the air flow gradually increases to the elastic force of the regulating spring 9, the fixed rod 8 in the regulating valve core seat 5 and the sealing plate connected thereto move toward the side of the transition base 1 until they are tightly fitted with the flow sealing ring 7 in the sealing plate and the regulating valve core seat 5, cutting off the air flow from there into the interior of the safety valve. If the flow does not increase at this time, the flow device is in a closed valve state. Since the elastic force of the transition spring 2 is close to the elastic force of the adjustment spring 9, if the flow rate continues to increase (normal flow rate increase), the airflow enters through the air inlet 53, and then acts on the retaining ring 32 through the air hole 41 on the transition sealing ring 4. The pressure generated by the airflow can make the retaining ring 32 break away from the contact with the flow sealing ring 7, so that the transition baffle 3 moves to the side of the safety valve, and then the airflow enters the safety valve from the through hole of the transition baffle 3 through the air outlet, and the safety valve is in a normal working state. If the flow rate continues to increase, even greater than the elastic force of the flow spring 11 (according to the above, the elastic force of the flow spring 11 is at the maximum flow value allowed by the standard, and it can be judged as a flow caused by a fault when it is greater than the elastic force of the flow spring 11), the fixed rod 8 and the sealing plate connected to the flow spring 11 are pressed toward the flow sealing ring 7 until they are tightly fitted, and the flow device completely blocks the gas from entering the valve body, achieving flow protection.
[0028] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.
Claims
1. A flow adaptive flow device, characterized in that: It comprises a flow base, a transition assembly and two valve cores, wherein the flow base is fixedly connected with a filter seat, a flow valve core seat and an adjusting valve core seat in sequence, the flow valve core seat and the adjusting valve core seat are both provided with flow holes for gas to pass through, and flow holes are both provided with flow sealing rings, the two valve cores each comprise a fixing rod and a sealing plate for sealing the flow sealing ring, the fixing rod is fixedly connected at the center of the sealing plate, the two fixing rods are respectively sleeved with an adjusting spring and a flow spring, the two fixing rods respectively pass through the two flow sealing rings, one end of the flow spring and the adjusting spring are respectively abutted against the two sealing plates, the other ends of the flow spring and the adjusting spring are respectively abutted against the flow valve core seat and the adjusting valve core seat, the other end of the sealing plate abutted against the flow spring is abutted against the filter seat, and the other end of the sealing plate abutted against the adjusting spring is abutted against the flow valve core seat; the transition assembly comprises a transition sealing ring and an opening at one end The closure of the diaphragm is provided with a plurality of air holes, each of which is connected to the closure of the diaphragm by a plurality of air holes. The diaphragm is provided with a plurality of air holes, each of which is connected to the closure of the diaphragm by a plurality of air holes. The diaphragm is provided with a plurality of air holes, each of which is connected to the closure of the diaphragm by a plurality of air holes.
2. A flow adaptive flow device according to claim 1, characterized in that: An annular boss is integrally formed in the flow base, and the flow valve core seat and the regulating valve core seat are respectively fixed on both sides of the boss.
3. A flow adaptive flow device according to claim 2, characterized in that: The connection between the regulating valve core seat and the flow valve core seat and the boss is respectively provided with a first sealing ring and a second sealing ring.
4. A flow adaptive flow device according to claim 3, characterized in that: A constriction is provided at the outer edge of one end of the flow valve core seat away from the filter seat, and the second sealing ring is sleeved at the constriction.
5. A flow adaptive flow device according to claim 4, characterized in that: The ends of the flow valve core seat and the regulating valve core seat away from the filter seat are both provided with guide tubes, and the two fixing rods are respectively slidably connected in the two guide tubes.
6. A flow adaptive flow device according to claim 5, characterized in that: The two guide tubes extend into two flow-through sealing rings respectively, and the ends of the flow-through spring and the regulating spring away from the sealing plate are respectively sleeved on the corresponding guide tubes.
7. A flow adaptive flow device according to claim 6, characterized in that: The two sealing plates are equidistant from the corresponding guide tubes. In the initial state, the end of the fixing rod located in the overflow valve core seat away from the filter seat abuts against the sealing plate between the overflow valve core seat and the regulating valve core seat.
8. A flow adaptive flow device according to claim 7, characterized in that: An annular groove is provided on the side of the transition sealing ring facing the transition baffle, the air holes are arranged at the groove, and an annular flange used in conjunction with the groove is provided on the transition baffle.
9. A flow adaptive flow device according to claim 8, characterized in that: The transition baffle includes a sleeve and an annular retaining ring, which is slidably connected to the transition base. Connecting rods are evenly distributed on the outer wall of the sleeve. The end of the connecting rod away from the sleeve is fixedly connected to the inner wall of the retaining ring. The gap between the connecting rod, the sleeve and the inner wall of the retaining ring constitutes the through hole; the sleeve is slidably sleeved on the guide tube of the regulating valve core seat.
10. A flow adaptive flow device according to claim 9, characterized in that: The regulating valve core seat includes an annular regulating fixed seat and a fixed connection in the regulating fixed seat, the regulating cylinder and the regulating fixed seat are coaxial, the flow hole is arranged at the center of the regulating cylinder and passes through it, the air inlet holes are evenly distributed between the regulating cylinder and the regulating fixed seat, the flow sealing ring is fixedly connected in the regulating cylinder, the aperture of the flow hole is larger than the outer diameter of the sleeve, and the sleeve is coaxial with the regulating cylinder; one end of the guide tube is fixedly connected in the regulating cylinder, the transition sealing ring is sleeved on the regulating cylinder, and the flange is arranged on the side of the retaining ring facing the transition sealing ring.